Picker-motion for looms



ms N m U0 0L w nI N & m 0 MM R E K m TP d o M 0 m Patented July 22, 1890.

l/viiwwow UNITED STATES PATENT OFFlCE.

THOMAS HALL AN D DAVID YOUNG, OF LAW'RENOE, MASSACHUSETTS.

PlCKER-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 432,527, dated July 22, 1890.

Application filed April 24, 1889. Renewed April 5, 1890. Serial No. 346,641. (No model.)

To all whom, it may concern.-

Be it known that we, THOMAS HALL and DAVID YOUNG, citizens of the United States,

residing at Lawrence, in the county of Essex.

tions for looms, which improvements will be fnlly'understood from the following description and claims, taken in connection with the annexed drawings, in which Figure 1 is a view in perspective of part of a picker-stick having our invention applied thereto, and Fig. 2 is a sectional view taken vertically and longitudinally through Fig. 1.

Referring to the annexed drawings by numbers and letters, 1 designates a hub, which is secured to the lay rock-shaft by a set-screw 2. 3 designates the rocker-bed on which said hub is formed, having a flat upper surface and provided near one end with a transverse arc-bearing 5, adapted to receive the arcshaped recess 18 in the bottom of the rocker 15, and allow the latter to articulate freely. The recess 18 and the arc-shaped bearing afford a fulcrum for the rocker and allow it free vibration without using bolts. The rocker can thus be lifted from its seat when necessary for lu-' bricating it. The said rocker-bed is constructed with flanges (3 6 on its bottom, having oblong slots 4: transverselythrough them that receive the square head and body of a transverse bolt 1), which bolt passes through a longitudinally-adj ustable block 6, having a curved upturned lip 0. (Shown clearly in Fig. 2.) This block 6' is provided with the lip c for a double purposeto wit, by reason of its protruding through the vertical slot (Z it prevents lateral displacement should the bolt and nut attachment wear loose; also, the point of impingement of the lip against the part 10 is brought in or nearly in the horizontal plane of the axis of vibration of the rocker 13. The said lip of the block 6 also affords an abutment to keep the rocker upon its fulcrum-seat and to compensate for wear. The slots 4 4, through the flanges 6 6, above referred to, are in a plane at right angles to the slot (1, and terminate short of the sheath of the picker-stick, as clearly shown in Figs. 1 and 2 of the annexed drawings.

11 designates the picker-stick, which passes vertically through the rocker and through an oblong slot (1, made through the rocker-bed 3. The rocker is constructed with an upper flanged guide 9 and a lower flanged guide 8, which form a vertical elongated bearing for the outer edge of the picker-stick, and which are cast integral with the'rocker.

Against the opposite edge of the pickerstick 11 we apply a flanged guide or clamp 10, and confine this guide or clamp and the picker-stick in proper place to the rocker by means of bolts 12 12 and a bifurcated wedge 1 1. The grooves between the flanges of the clamp 10 and the guides 8 and 9 are wider than the thickness of the picker-staff, and the aperture through theupper portions of the clamp 10, through which the upper bolt 12 passes, is elongated laterally, as shown in dotted lines, Fig. 1, so that when the nut on said upper bolt is loosenedthe picker-staff can be adjusted laterally and properly aligned with respect to the raceway for the shuttle. It will be observed that we form a curved stop i on the lower part of the clamp 10, the object of which is to afford an abutment for the lip c of block 6', by adjusting which latter the throw of the picker-stick can be regulated. It will also beobservcd that we adj ustably apply a weight 19 on the extension 17 of the rocker 15, which weight gives a positive throw to the picker-stick, and can be secured to the rocker-extension at any desired distance from the fulcrum 5 of the rocker-bed by means of a set-screw 20.

The wedge ll not only serves as an auxil-' iary means for securing the picker-stick rigidly between the flanged clamp and guides; but by means of this wedge the position of said stick can be accurately adjusted in a direction with respect to thelength of the rocker and its bed.

Having described our invention, we claim- 1. The combination, with the picker-stick,

the rocker having an are-sl1apcd recess in its under side, and provided with an extension and an adjustable Weight thereon, the flanged guides S 9, east solidly with the rocker and the flanged clamp, and fastening-bolts therefor, of the rocker-bed provided with the are engaging the are-shaped recess in the lower face of the rocker, all as specified.

2. The combination, with the picker-stick, the weighted rocker provided with the flan ged guides and clamp, the stop-z, formed thereon, the bolts 1:2, and an adjusting-wedge, the rocker-bed provided with a vertical passage through it for the said piekerstick, the guide THOMAS HALL. DAVID YOUNG. Witnesses:

FRANCIS A. HALL, PERCY HALL, 

